USGS Streamgage 06188000
Lamar River near Tower Ranger Station YNP
Lamar River near Tower Ranger Station YNP is USGS streamgage 06188000 in Wyoming, monitoring river discharge in hydrologic subbasin 10070001. It drains a watershed of about 668 square miles. Discharge records at this site go back to 1923. Typical flow runs near 1,155.8 cfs in July and 364.1 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead, alongside daily high and low water-temperature forecasts.
View live conditions & forecast →
Gauge details
- State
- Wyoming
- Drainage area
- 668 sq mi
- Gauge elevation
- 6,006 ft
- Subbasin (HUC-8)
- 10070001
- Coordinates
- 44.92818, -110.39427
- USGS site number
- 06188000
- Records begin
- 1923-05-01 (103 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Lamar River near Tower Ranger Station YNP. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 159 | 170 | 179 | ||
| 154 | 167 | 178 | ||
| 148 | 162 | 174 | ||
| 146 | 160 | 175 | ||
| 143 | 158 | 172 | ||
| 141 | 157 | 172 | ||
| 139 | 155 | 171 | ||
| 138 | 154 | 170 | ||
| 134 | 150 | 167 | ||
| 131 | 147 | 164 | ||
| 128 | 145 | 163 | ||
| 125 | 142 | 160 | ||
| 122 | 140 | 158 | ||
| 120 | 138 | 157 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 102 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 81.5 | 103.4 | 148.4 | |
| February | 79.9 | 100.3 | 142.3 | |
| March | 84.5 | 111.9 | 189.7 | |
| April | 137.8 | 364.1 | 1,121.3 | |
| May | 1,132.6 | 2,581.2 | 5,899.4 | |
| June | 1,906.1 | 3,736.7 | 7,436 | |
| July | 477.4 | 1,155.8 | 2,358.2 | |
| August | 186.9 | 298.7 | 524.5 | |
| September | 133.7 | 193.7 | 362.8 | |
| October | 128 | 184.4 | 347.2 | |
| November | 104.1 | 149.4 | 242 | |
| December | 89 | 117.5 | 167.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Lamar River near Tower Ranger Station YNP normally run highest?
- June, on the long-term record. The median daily flow that month is about 3,736.7 cfs, against 100.3 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Lamar River near Tower Ranger Station YNP?
- It depends on the month. In January, half of days historically fall near 103.4 cfs, with the middle 80% of days between 81.5 and 148.4 cfs. The month-by-month table on this page gives the full range.
- How long has Lamar River near Tower Ranger Station YNP been measured?
- Discharge records at USGS site 06188000 begin in 1923, about 103 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Lamar River near Tower Ranger Station YNP?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. A companion model forecasts each day's water-temperature high and low. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- Where is Lamar River near Tower Ranger Station YNP?
- The gauge sits at 44.92818, -110.39427, in Wyoming, in hydrologic subbasin 10070001, at an elevation of about 6,006 feet, draining roughly 668 square miles.
- Can I use Lamar River near Tower Ranger Station YNP data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.